package constants

import "jvmgo/ch05/instructions/base"
import "jvmgo/ch05/rtda"
/*
包括ACONST_NULL, DCONST_0, DCONST_1等把操作数放在操作符中，直接Push的指令 
*/
type ACONST_NULL struct {base.NoOperandsInstruction}
//把null引用push到栈顶
func (self *ACONST_NULL) Execute(frame *rtda.Frame) {frame.OperandStack().PushRef(nil)}
type DCONST_0 struct {base.NoOperandsInstruction}
func (self *DCONST_0) Execute(frame *rtda.Frame) {frame.OperandStack().PushDouble(0.0)}
type DCONST_1 struct {base.NoOperandsInstruction}
func (self *DCONST_1) Execute(frame *rtda.Frame) {frame.OperandStack().PushDouble(1.0)}
type FCONST_0 struct {base.NoOperandsInstruction}
func (self *FCONST_0) Execute(frame *rtda.Frame) {frame.OperandStack().PushFloat(0.0)}
type FCONST_1 struct {base.NoOperandsInstruction}
func (self *FCONST_1) Execute(frame *rtda.Frame) {frame.OperandStack().PushFloat(1.0)}
type FCONST_2 struct {base.NoOperandsInstruction}
func (self *FCONST_2) Execute(frame *rtda.Frame) {frame.OperandStack().PushFloat(2.0)}
type ICONST_M1 struct {base.NoOperandsInstruction}
func (self *ICONST_M1) Execute(frame *rtda.Frame) {frame.OperandStack().PushInt(-1)}
type ICONST_0 struct {base.NoOperandsInstruction}
func (self *ICONST_0) Execute(frame *rtda.Frame) {frame.OperandStack().PushInt(0)}
type ICONST_1 struct {base.NoOperandsInstruction}
func (self *ICONST_1) Execute(frame *rtda.Frame) {frame.OperandStack().PushInt(1)}
type ICONST_2 struct {base.NoOperandsInstruction}
func (self *ICONST_2) Execute(frame *rtda.Frame) {frame.OperandStack().PushInt(2)}
type ICONST_3 struct {base.NoOperandsInstruction}
func (self *ICONST_3) Execute(frame *rtda.Frame) {frame.OperandStack().PushInt(3)}
type ICONST_4 struct {base.NoOperandsInstruction}
func (self *ICONST_4) Execute(frame *rtda.Frame) {frame.OperandStack().PushInt(4)}
type ICONST_5 struct {base.NoOperandsInstruction}
func (self *ICONST_5) Execute(frame *rtda.Frame) {frame.OperandStack().PushInt(5)}
type LCONST_0 struct {base.NoOperandsInstruction}
func (self *LCONST_0) Execute(frame *rtda.Frame) {frame.OperandStack().PushLong(0)}
type LCONST_1 struct {base.NoOperandsInstruction}
func (self *LCONST_1) Execute(frame *rtda.Frame) {frame.OperandStack().PushLong(1)}